Brick-machine



P. S. .DEVLAN. BRICK momma.

No. 18,040. Patented Aug. 25, 1857.

UNITED STATES PATENT OFFICE.

P. S. DEVLAN, OF READING, PENNSYLVANIA.

BRICK-MACHINE.

Specification of Letters Patent No. 18,040, dated August 25, 1857.

. of the construction and operation of the same, reference being had to the accompanying drawings, making a part of this specification, in which-- Figure 1, represents a perspective view.

' Fig. 2, represents a vertical section taken through the hopper transversely, and Fig. 3, represents a detached portion in section, not shown clearly in the other figures.

Similar letters of reference .where they occur in the several figures, denote like parts of the machine in all of them.

To enable others skilled in the art to make and use my invention, I will proceed to describe the same with reference to the drawings.

A, represents a bed plate, on which in suitable bearings is placed a shaft B, to which motion may be communicated from any first driving power. C, is a clay hopper also mounted on said bed, and within this hopper is a chambered, or divided wheel a, which receives charges of clay, and carries it around, until it drops down into a receiv ing chamber D, below said hopper, from whence it is forced into the mold, as will be described.

On the end of the shaft B, is a crank 12, t which one end of a connecting rod 0, is attachedthe other end of said rod being pivoted at e to the bars cl, hung on the axis 2', of the chambered wheel a, placed in the hopper. A ratchet wheel 2, is permanently fixed on the axis 2', and between the bars (Z, and to the upper end of the bars (Z, is hung a pawl 3, which takes into said ratchet wheel. By this arrangement the wheel a, in the hopper, has an intermittent rotary mot-ion in one directionthe pawl slipping over the ratchet when drawn back, and taking into it, as it returns again. To the shaft B, is'also permanently affixed an eccentric wheel E, which turns between two upright lugs F, F, on the piston or plunger 'G said plunger passing through the clay chamber D, and carrying the charge of clay with it, into the mold n, formed in the mold The mold wheel is arranged in wheel H.

close proximity to the pillar block I, so that said pillar block forms one of the sides of the mold, and receives and resists the pressure of the piston on the clay. Upon the shaft B, is also placed a beveled pinion J, which takes into and operates a similar beveled pinion K, arranged on a shaft L, and on the opposite end of said shaft L, from its pinion K, is affixed an arm M, which in turning with its shaft strikes alternately the two uprights N, on a slide 0, causing said slide to have a reciprocating or traversing motion to and from the molding wheel H. To one of the uprights N, is attached one end of a connecting rod m, the other end being connected to a wrist pin 0, eccentrically placed on the mold wheel H, and which causes said mold wheel to rock or partially rotate on its shaft P. A stud r, is so arranged on the shaft B, as that every rotation of the shaft will-bring said stud against a slide .9, which carries a plunger 25, around the rod of which plunger a helical spring u is coiled, to draw it back after the stud has forced it forward, and then passed away from it.

The plunger or piston G, and the plunger 15, are in parallel vertical planes but the latter somewhat higher than the former. The mold wheel rocks or rolls on its shaft just sufficient to bring its mold nfirst opposite the plunger G, which brings up and presses into said mold the clay that forms the brick, and then to the plunger 6, which pushes the molded brick out of its mold; and this fresh molded brick may be received on a table or plat-form o, attached to the slide, and drawn back with said slide, within convenient reach of the attendant.

The operation of the machine is obvious, each revolution of the shaft B, feeding in clay to the clay receptacle, and forming, pressing, and delivering a brick.

The object of the positive feed is as follows viz: that if the feeding-in wheel a, were not held, while the plunger G, was forcing up the clay, the clay might rise and escape through the hopper, and thus partially defeat its operation, but as said wheel can only turn to admit the clay into the clay receptacle, being held by the dog or pawl 3, from turning in an opposite direction, the clay could not be forced out of the clay receptacle, except into the mold.

As there is a period in the rotation of the arm M between the uprights N N, when said arm is not in contact with said uprights, and at which period the mold wheel H, having no perceptible support might possibly be thrown out of proper position to receive the plungers that act in concert with it, I have arranged the stud 1" on the shaft B, so as to have the lead of the cam wheel E, on the same shaft, so that the plunger t, by the time that the arm M ceases to hold the mold wheel, has entered into the mold of said wheel, and thus holds the wheel against any accidental turning until the proper time for so doing, to bring the mold again opp0 site the plunger G.

Having thus fully described the nature of my invention, what I claim therein as new, and desire to secure by Letters Patent 1s,

In combination with a clay receptacle sup- P. S. DEVLAN.

lVitnesses ANDW. J. BOSWELL, THOMAS CASSIDY. 

